Mechanical movement.



J. B. BURST.

MECHANICAL MOVEMENT.

APPLICATION FILED APR. 10, 1912.

1,176,027. Patented Mar. 21, 1916.

Jo 5 97 4L 2? 6/ JOHN B. BURST, or ELMI-IURST, NEW YORK.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented Mar. 21, 1916.

Application filed April 10, 1912. Serial No. 689,774.

mechanism. The gear mechanism is mount-- ed in a compact housing, and the various connections are read1ly removable from said housing.

A further object of my invention is to provide a bearing for driving and driven toothed-wheels in which the -V21IlOLlS parts will be held snugly in a housing by means I of the frictional engagement of the sides of said bearing. To this end I have designed a collapsible housing so arranged and constructed that the various gear elements may Fig; 3 is a perspective view of one of the housing sections.

Reference being made to the accompanying drawings wherein slmilar reference characters deslgnate similar parts wherever found, I show a housing composed of the sections 1 and 2. It will be understood that the housing will, in practice, be fixed in position so that it will not rotate together with the gear wheels. The housing is intended to be only a convenient bearing for the gear wheels. The housing is arranged to receive two pairs of bevel wheels, and said wheels will be snugly incased by said housing so that only two shafts shall protrude therefrom. The sections 1 and 2 may have any suitable configuration so that when in super-posed relation a hollow body 3 is formed, and in this body the bevel wheels will be inclosed. For the purpose of illustration the sections 1- and 2 are shown seg openings 17 formed in said caps.

mental or semicylindrical in contour, and are formed at each end with shoulders 4; and 5 respectively, so that when said segments are held in super-posed position the caps 6 may be slid over said shoulders to prevent the displacement thereof; said caps will fit said shoulders flush with the circumference of the joined sections 1 and 2, and may, by any means such as screws be secured to said shoulders so as to form a housing.

The segmental sections 1 and 2 when united, as above described, provide the cylindrical space 3 in which the gear mechanism will be mounted. Each of said sections is formed with a central dish-shaped recess 7 adapted to receive the correspondinglyshaped surface 8 of a bevel wheel 9 and 10 respectively, the teeth 11 of said bevel wheels being flattened as at 12 so as to run along a track or way 13 made especially to accommodate them and to provide clearance for said teeth in their movement. Meshing with the bevel wheels 9 and 10 are the bevel wheels 14 and 15 mounted upon the shafts l6 and 16, which shafts protrude from the It will be noticed that a portion of the inner surface of each of said sections is cut away at 18 and 19 at diametrically opposite points, so as to cooperate to form the way 13, as clearly shown in Fig. 2. When said sections are held in joined relation, the cylindrical portions 20 and 21 forming the outermost surfaces of the bevel wheels 14 and 15 will have to revolve freely in the housing and bear against the correspondingly-shaped endmost surfaces 22 and 23 formed upon each section'l and 2, said portions 20 and 21 being suitably lubricated so as to revolve frictionlessly in the housing formed by said joined sections. The shaft 16 is formed, preferablywithin the plane of the housing with a cylindrical socket 24: adapted to receive a correspondingly-shaped reduced portion or tenon 25 formed upon the shaft 16, so that the bevel wheels 1a and 15 may be free to rotate in opposite directions in the housingin which they are incased. By means of the groove and tenon relation of said shaft they are held, at all times, in axial alinement, a desirable feature in gear mechanism. 7

When the parts are in operative position the bevel wheels 9 and 10 will be seated in their recesses'in parallel relation, and the bevel wheels 14: and 15 mounted on the wise, and vice versa.

shafts 16 and 16-will be disposed parallel each to each, and will be disposed at rightangles with respect to and be in mesh with the first named bevel wheels. H

lVhen the bevel wheels are in the position above described, it will be obvious that by turning shaft 16 clock-wise, the oppositely arranged shaft 16 will, through the interineshing oppositely arranged and seated bevel wheels 9 and 10, turn counter-clock- Owing to the width of the way 13 the teeth of the bevel wheels 9 and 10 will not engage the innermost surface of the cutaway portions 18 and 19 formed upon the sections 1 and 2, thereby facilitating the rotation ofsaid last named bevel wheels. To dismantle the housing formed by said sections the screws 29, will be removed, then the caps 6 will be removed,-

and the sections may then be taken apartas well as the oppositely arranged shafts 16 and 16, held against endwise displacement by means of said caps. The housing formed will conceal from view the gear mechanism which I have devised. It will be observed that one of the caps6 may be removed so as to enable the. tenon 25 formed upon the driven shaft 16 to be retracted out of the socket of the driving shaft 16 a sufficient distance to throw the bevel wheel 14 out of mesh with the seated oppositely arranged bevel wheels 9 and 10, so that said driven shaft will cease to rotate despite the rotation of the driving shaft 16 and the remaining bevel wheels. 7

In order to provide for the lubrication of the bevel wheels, oil or any other desirable lubricant may be introduced into the housing through the ports 30, shown clearly in Figs. 1 and 2. In thisway the four bevel wheels may constantly be lubricated so as not to be hampered in making each revolution, and so as not to bear withtoo much friction upon the seats provided for them in the housings. I

Numerous modifications may be resorted to in practice without departing in principle mounted in said casing and meshing withsaid first-named bevel gears, and convex trunnions carried by said idle'bevel gears and rotatably seated in said member, said casing being" formedwith oil ports at oppohaving-a plane surface snugly fitting the;

inner surfaces of said plate, a separate shaft sectlon upon which each of said gears 1 s fixed, each of said sections projecting externally of said casing out of said end plates,

oppositely arranged idle bevel gears having trunnions mounted in said casingand mesh: ing' with said first-named bevel gears and rotatably seated in said member, said casing being formed with oil vports at opposite points in the axial plane of said trunnions, one of said shaft, sections having a reduced end adapted to seat in a recess in the end offsaid other shaft section.

'3. In combination two semi-cylindrical sections united to form a single member, end plates removably secured to saidmem: ber to form a casing, two bevel gears, each having a smooth surface snugly fitting the innericircumference of said member, a separate shaft section upon which each of said gears is fixed, each of said sections projecting externally of said casing, oppositely arranged idle bevel gearsmounted in said casing and meshing with said first-named bevel gears, and convex trunnions carried by said idle bevel gears and rotatably seated in said member, said casing being formed with oil ports at opposite points in the axial plane of said trunnions, said semi-cylindrical sections having recesses formed therein to receivesaid trunnions, one of said shaft sectionsxhaving a reduced end adapted to seat in a recess in the end of said other shaft section, said plates having annular-right angular. flanges adapted to seat upon and hold said sections fixedly connected.

l. Gear mechanism comprising two seg mental sections forming a cylindrical member, annular shoulders formed upon the opposite edges of said member, idle v. bevel wheels. arranged at diametrically opposite points in said member, each of said sections being formed with a dish-shaped depression, convex trunnions formed integrally upon said idle bevel wheels and rotatably seated in said depressions, said sections be ing cut-away to provide agtrack for the; teeth of said idle bevel wheels, caps engagingsaid shoulders to close said member, means 0 for removably holding said caps against displacement,shafts passing through said caps, bevel wheels fixed upon said shafts and meshing with said idle bevel wheels,- said shafts arranged to protrude laterally of said member, anda tenon formed upon the inner V endof one of said shafts, the other shaft being formed with a mortise receiving said tenon, saidsections being formed-with oil-- snugly fitting the inner circumference of said member, a separate shaft section upon which each of said gears is fixed, each of said sections projecting externally of said casing out of said end plates, oppositely arranged idle bevel gears mounted in said casing and meshing with said first-named bevel gears, and convex trunnions carried by said 15 idle bevel gears and rotatably seated in said member, said casing being formed with oil ports at opposite points in a plane with said trunnions.

In testimony whereof I aflix my signature 20 n presence of two witnesses.

JOHN B. BORST.

Witnesses:

JOHN T. GRosAN, CYRUS WARMBOLD.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

Washington, I). 0 

